Gas-burner.



PATENTED JUNE 27, 1905.

F. H. CRAWFORD.

GAS BURNER.

APPLICATION FILED APR.13,1905.

NiTEn STATES Patented June 27, 1905.

FRANCIS H. Gl-tAlYFORl), OF UQLUMBUS, ()lllO.

GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 793,279, dated June 27', 1905.

Application filed April 13, 1905. Serial No. 255,388.

To (Ii/l 1117mm, it Iii/my concern.-

Be it known that l, FRANCIS H. Gnuvronn, a citizen of the United States, residing at ()0- lumbus, in the county of Franklin and State of Ohio, have invented certain new and useful improvements in (-l-as-llurners; and I do declare the following to be a full, clear, and exact description of the imentiomsuch as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in gas-burners; and it consists in the construction, combination, and arrangement of devices herein shown and described,

The object of the invention is to provide a simple, inexpensive, and etlieicnt device of this character in which air will be thoroughly mixed with the gas before it is discharged from the burner.

The above and other objects, which will appear as the nature of my invention is better understood, are accomplished by means of the construction illustrated in the accompanying drawings, in which Figure l is a vertical longitudinal sectional view through my improved gas-burner. Figs. 2 and 3 are vertical transverse sectional views taken, respectively, on the lines 2 2 and 3 3 in Fig. 1. Fig. 4,- is a detail front elevation of the rotary agitating-fan and its supportingframe. Fig. 5 is a side elevation of the same, and Fig. 6 shows a slight modification of the agitating device used in the burner.

Referring to the drawings by numeral, 1 denotes my improved gas-burner, which comprises a hollow tube or casing 2, preferably of cylindrical form and constructed of two half-sections 3 and a, which are united at their inner ends. This connection of the sections is preferably formed by providing their meeting ends with outwardly projecting radial flanges or lugs 5, through alining apertures in which are passed fastening-bolts 6. These bolts 6 also pass through aperturcd lugs 7, arranged between the lugs 5 and formed upon the two half-sections 8 and 9 of a frame or partition 10, in which is mounted one or more rotary agitating devices 11. The rotary agitating device 11 is preferably in the form of a rotary fan consisting of a series of blades 12, secured upon a sleeve or hub 13, which is mounted to rotate freely upon a shaft H. The latter is disposed longitudinally and con.- centrically in the mixing-tube 2 and the frame 10, which latter is circular in form and of a diameter equal to the inner diameter of the tube 2. The shaft It is preferably formed integral with a spider 15, provided upon the section 9 of the frame ll), and is adapted to project into a |)earirig-opening it), formed in a spider 17, provided upon the section 8 of the frame 10.

The mixing tube or casing 2 has its ends open, and through one of them projects a gassupply pipe :18, which is supported concentrically within the tube by arms or braces 1%). Upon the inner end of the pipe 18 is provided a suitable spraying-nozzle 20, which may be in the form of a perforated screwcap, or, as illustrated in the drawings, in the form of a cap which has a plurality of longitmlinallyextending parallel branch tubes or pipes 21, through which a gas is discharged. The discharge of the gas from the nozzle 20 draws air into the mixing-tube through its right'hand end and causes the rotary fan it to turn, thereby agitating the air and gas and producing a thorough mixture of them, so that when discharged from the opposite or left-hand end of the burner-tube they may be completely consumed.

Instead of employing simply one rotary fan or agitating device .11 for the mixing-tube 2 I may mount a plurality of them, as shown at 22, in a partition 23, (shown in Fig. 6 of the drawings) adapted to be inserted between the meeting ends of the sections 3 and l of said mixing-tube. The fans 22 may be constructed in any desired manner and any number of them may be employed.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the inven-- tion will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

extending into the tube at one side of the said frame and having as iu'eading-head at its discharge end and a plurality of spaced longitudinally-extending branch discharge-tubes projecting from the said spreading-head, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRANCIS I-I. CRAWVFORD.

\Vitnesses:

O. J. TRIGHT, MURIEL VAN ZANDT. 

